Road-scraper.



E. W. OHINN & J. T. HARRIS.

ROAD SORAPER. APPLIOATION FILED SEPT. 16, 1909.

Patented Apr. 9, 1912.

States, residing at Columbia, in the county of Boone and State ofMissouri, have in-.

UNITED STATES PATENT OFFICE.

ERLE W. CHINN AND JOSEPH T. HARRIS, OF COLUMBIA, MISSOURI.

ROAD SCRAPER.

To all whom it may concern.

Be it known that we, ERLE W. CHINN and JOSEPH T. HARRIS, citizens of theUnited vented a new and useful Improvement in Road-Scrapers, of whichthe following is a specification.

This invention relates to road scrapers, the object being to provide aroad scraper which is exceedingly simple and cheap in construction andone which is very effective in use.

A still further object of the invention is to provide a road scraperhaving an oblique blade carried by a frame which is adjustably supportedby a wheel whereby the same can be raised or lowered.

A still further object of the invention is to provide a road scraperwhich is so constructed that the frame is so mounted upon the wheel thatit can be easily and quickly adjusted vertically so as to raise or lowerthe same whereby the scraper blade can be elevated in such a manner thatit will only engage the upper surface of a road whereby the loose dirtwill only be removed without injuring the road in any way.

A still further object of the invention is to provide a draft equalizerin connection with the scraper whereby an even pull can be obtained soas to prevent side draft.

With these objects in view, the invention consists of the novel featuresof construction, combination and arrangement of parts hereinafter fullydescribed, pointed out in the claims and shown in the accompanyingdrawings, in which,

Figure 1 is a top plan view of our improved road scraper. Fig. 2 is aside elevation. Fig. 3 is a detail side elevation, a portion of theframe being shown and the manner of supporting the same from the axle ofthe wheel. Fig. 4 is a detail top plan view of Fig. 3.

In carrying out our improved invention, we employ a pair of parallelbars A and B to the forward ends of which is connected a scraping bladeC which extends therefrom at an acute angle, the blade being inclinedrearwardly and having a scraping shoe D secured to its lower edge so asto prevent the same from wearing out and this blade can be formed of anysuitable metal but we prefer to use a wooden blade with a shoeSpecification of Letters Patent.

Application filed September 16, 1909.

Patented Apr. 9, 1912.

Serial No. 518,094.

as described, which enables the device to be manufactured cheaper.Extending transversely of the bars A and B is a cross-bar D which isconnected to the blade C and has a brace F connected thereto whichextends out beyond the blade C provided with a chain H which isconnected to one end of a bar I which is provided with a plurality ofapertures in which is adapted to be secured the connecting member J of adouble-tree J to which can be connected a pair of horses for drawing thescraper, the other end of the bar I being connected to a brace K by achain L. I

Secured to the inner faces of the parallel bars A and B adjacent theirrear ends are blocks M and N provided with spaced vertical bores throughwhich extend the threaded ends of U-shaped clips 0 which straddlepinions P secured on an axle Q which extends transversely throughuprights A and B secured on the upper edges of the parallel bars A and Bby angle irons as clearly shown. Mounted on the .aXle Q. is a wheel Rwhich is provided with a wide rim having diagonal cleats for preventingthe same from slipping sidewise, said cleats also serving the purpose ofengaging the ground for preventing the wheel from slipping in any way.The lower ends of the U-shaped clips 0 are provided with nuts S securelylocking the clips in position within the blocks M and N and it will beseen that by mounting the clips in this manner their positions withrespect to the side bars can be adjusted. The clips 0 are provided withrack portions 0' adapted to mesh with the pinions P of the axle Q sothat when the axle is rotated the bars A andB can be raised and loweredas desired so as to raise and lower the scraping blade and it will beseen that as the rear ends of the bars are raised the angle of thescraping blade is changed with respect to the ground so as to cause thesame to only scrape the upper surface. For revolving the axle Qwe secureon the same adjacent the upright A a ratchet wheel T which is adapted tobe engaged by a spring pawl U carried by a crank handle V which isloosely mounted on the axle and held in position thereon by a nut Q, andit will be seen that for operating the crank handle the axle will berotated so as to cause the rack portions of the U-shaped clips 0 totravel over the same which will raise and lower the scraper.

It will be seen that by this arrangement the bars can be easily andquickly raised or lowered so as to change the position of the blade andit will be seen that by having a clip arranged to each side of the wheelthe axle can be held in a horizontal position as the clips can beadjusted by operating the nuts S.

The scraper can be used without the wheel if desired but we have foundby experimenting that better results can be obtained when the scraper issupported witha wheel as set forth.

lVhile we have only shown and described one blade on the scraper it isof course understood that a second blade can be attached when thecutting is to be increased.

From the foregoing description it will be seen that We have provided aroad scraper which is so constructed that the scraping blade can beadjusted by adjusting the posi tion of the frame carrying the same withrespect to the axle of the wheel so as to cause the blade to scrape anyamount of the surface of the road off without injuring the road in anyway.

lVhat we claim is z- 1. A road scraper comprising a pair of parallelbars having a scraping blade extending at an acute angle therefrom,blocks secured to the rear ends of said bars, clips secured in saidblocks, provided with rack portions, uprights carried by said bars, anaxle mounted in said uprights carrying a wheel, pinions fixed on saidaxle meshing with the rack portions of the clips and means for operatingsaid axle.

- 2. A road scraper comprising a pair of bars, a scraping bladeconnected to said bars and extending therefrom, at an acute angle, clipscarried by said bars and having rack portions, an axle, pinions mountedon the axle and adapted to engage said rack portions, and a wheelmounted upon said axle.

3. A road scraper comprising a pair of parallel bars having a scrapingblade extending at an acute angle therefrom clips carried by said barsprovided with rack portions, uprights carried by said bars, an axlemounted in said uprights carrying a wheel, pinions fixed on said axlemeshing with the rack portions of the clips and means for revolving saidaxle.

4. A road scraper comprising a frame carrying a scraping blade, uprightscarried by said frame, an axle loosely mounted in said uprights carryinga wheel, pinions fixed on said axle, clips provided with rack portionsmeshing with said pinions and a pawl and ratchet mechanism for turningsaid axle.

5. A road scraper comprising a pair of parallel bars having a scrapingblade extending therefrom at an acute angle, a cross bar connecting saidbars and blade, braces connected to the said cross bar and blade, chainscarried by said braces, a bar connected to said chains, a double-treeadjustably mounted on said bar and a wheel for supporting the rear endsof said bars together with means for adjusting said bars with respect tothe axle of the wheel.

6. A road scraper comprising a pair of parallel bars having a scrapingblade extending from their forward ends at an acute angle, said bladebeing provided with a shoe at its lower edge, blocks secured to theinner faces of said bars adjacent their rear ends provided with parallelbores, U-shaped clips adjustably mounted in said bores provided withrack portions, nuts for adjusting the position of said clips within saidbores, slotted uprights carried by said bars, an axle mounted in saiduprights provided with pinions meshing with the rack portions of theclips, a wheel loosely mounted on said axle and a crank for operatingsaid axle.

7. A road scraper comprising a frame carrying a scraping blade, slotteduprights carried by said frame, an axle mounted in said uprightsprovided with a wheel, pinions secured on said axle, clips carried bysaid frame provided with rack portions meshing with said pinions, aratchet fixed on said axle and a crank loosely mounted on said axlecarrying a pawl for engaging said ratchet.

ERLE W. GHINN. JOSEPH T. HARRIS. Witnesses:

W. A. F REEAR, W. E. SMITH.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

